sym_fw2.h
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上传日期:2013-02-24
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文件大小:52k
- /*
- * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family
- * of PCI-SCSI IO processors.
- *
- * Copyright (C) 1999-2001 Gerard Roudier <groudier@free.fr>
- *
- * This driver is derived from the Linux sym53c8xx driver.
- * Copyright (C) 1998-2000 Gerard Roudier
- *
- * The sym53c8xx driver is derived from the ncr53c8xx driver that had been
- * a port of the FreeBSD ncr driver to Linux-1.2.13.
- *
- * The original ncr driver has been written for 386bsd and FreeBSD by
- * Wolfgang Stanglmeier <wolf@cologne.de>
- * Stefan Esser <se@mi.Uni-Koeln.de>
- * Copyright (C) 1994 Wolfgang Stanglmeier
- *
- * Other major contributions:
- *
- * NVRAM detection and reading.
- * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
- *
- *-----------------------------------------------------------------------------
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * Where this Software is combined with software released under the terms of
- * the GNU Public License ("GPL") and the terms of the GPL would require the
- * combined work to also be released under the terms of the GPL, the terms
- * and conditions of this License will apply in addition to those of the
- * GPL with the exception of any terms or conditions of this License that
- * conflict with, or are expressly prohibited by, the GPL.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
- * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- /*
- * Scripts for SYMBIOS-Processor
- *
- * We have to know the offsets of all labels before we reach
- * them (for forward jumps). Therefore we declare a struct
- * here. If you make changes inside the script,
- *
- * DONT FORGET TO CHANGE THE LENGTHS HERE!
- */
- /*
- * Script fragments which are loaded into the on-chip RAM
- * of 825A, 875, 876, 895, 895A, 896 and 1010 chips.
- * Must not exceed 4K bytes.
- */
- struct SYM_FWA_SCR {
- u32 start [ 14];
- u32 getjob_begin [ 4];
- u32 getjob_end [ 4];
- #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
- u32 select [ 6];
- #else
- u32 select [ 4];
- #endif
- #if SYM_CONF_DMA_ADDRESSING_MODE == 2
- u32 is_dmap_dirty [ 4];
- #endif
- u32 wf_sel_done [ 2];
- u32 sel_done [ 2];
- u32 send_ident [ 2];
- #ifdef SYM_CONF_IARB_SUPPORT
- u32 select2 [ 8];
- #else
- u32 select2 [ 2];
- #endif
- u32 command [ 2];
- u32 dispatch [ 28];
- u32 sel_no_cmd [ 10];
- u32 init [ 6];
- u32 clrack [ 4];
- u32 datai_done [ 10];
- u32 datai_done_wsr [ 20];
- u32 datao_done [ 10];
- u32 datao_done_wss [ 6];
- u32 datai_phase [ 4];
- u32 datao_phase [ 6];
- u32 msg_in [ 2];
- u32 msg_in2 [ 10];
- #ifdef SYM_CONF_IARB_SUPPORT
- u32 status [ 14];
- #else
- u32 status [ 10];
- #endif
- u32 complete [ 6];
- u32 complete2 [ 12];
- u32 done [ 14];
- u32 done_end [ 2];
- u32 complete_error [ 4];
- u32 save_dp [ 12];
- u32 restore_dp [ 8];
- u32 disconnect [ 12];
- #ifdef SYM_CONF_IARB_SUPPORT
- u32 idle [ 4];
- #else
- u32 idle [ 2];
- #endif
- #ifdef SYM_CONF_IARB_SUPPORT
- u32 ungetjob [ 6];
- #else
- u32 ungetjob [ 4];
- #endif
- #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
- u32 reselect [ 4];
- #else
- u32 reselect [ 2];
- #endif
- u32 reselected [ 22];
- u32 resel_scntl4 [ 20];
- u32 resel_lun0 [ 6];
- #if SYM_CONF_MAX_TASK*4 > 512
- u32 resel_tag [ 26];
- #elif SYM_CONF_MAX_TASK*4 > 256
- u32 resel_tag [ 20];
- #else
- u32 resel_tag [ 16];
- #endif
- u32 resel_dsa [ 2];
- u32 resel_dsa1 [ 4];
- u32 resel_no_tag [ 6];
- u32 data_in [SYM_CONF_MAX_SG * 2];
- u32 data_in2 [ 4];
- u32 data_out [SYM_CONF_MAX_SG * 2];
- u32 data_out2 [ 4];
- u32 pm0_data [ 12];
- u32 pm0_data_out [ 6];
- u32 pm0_data_end [ 6];
- u32 pm1_data [ 12];
- u32 pm1_data_out [ 6];
- u32 pm1_data_end [ 6];
- };
- /*
- * Script fragments which stay in main memory for all chips
- * except for chips that support 8K on-chip RAM.
- */
- struct SYM_FWB_SCR {
- u32 start64 [ 2];
- u32 no_data [ 2];
- #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
- u32 sel_for_abort [ 18];
- #else
- u32 sel_for_abort [ 16];
- #endif
- u32 sel_for_abort_1 [ 2];
- u32 msg_in_etc [ 12];
- u32 msg_received [ 4];
- u32 msg_weird_seen [ 4];
- u32 msg_extended [ 20];
- u32 msg_bad [ 6];
- u32 msg_weird [ 4];
- u32 msg_weird1 [ 8];
- u32 wdtr_resp [ 6];
- u32 send_wdtr [ 4];
- u32 sdtr_resp [ 6];
- u32 send_sdtr [ 4];
- u32 ppr_resp [ 6];
- u32 send_ppr [ 4];
- u32 nego_bad_phase [ 4];
- u32 msg_out [ 4];
- u32 msg_out_done [ 4];
- u32 data_ovrun [ 2];
- u32 data_ovrun1 [ 22];
- u32 data_ovrun2 [ 8];
- u32 abort_resel [ 16];
- u32 resend_ident [ 4];
- u32 ident_break [ 4];
- u32 ident_break_atn [ 4];
- u32 sdata_in [ 6];
- u32 resel_bad_lun [ 4];
- u32 bad_i_t_l [ 4];
- u32 bad_i_t_l_q [ 4];
- u32 bad_status [ 6];
- u32 pm_handle [ 20];
- u32 pm_handle1 [ 4];
- u32 pm_save [ 4];
- u32 pm0_save [ 12];
- u32 pm_save_end [ 4];
- u32 pm1_save [ 14];
- /* WSR handling */
- u32 pm_wsr_handle [ 38];
- u32 wsr_ma_helper [ 4];
- #ifdef SYM_OPT_HANDLE_DIR_UNKNOWN
- /* Unknown direction handling */
- u32 data_io [ 2];
- u32 data_io_in [ 2];
- u32 data_io_com [ 6];
- u32 data_io_out [ 8];
- #endif
- /* Data area */
- u32 zero [ 1];
- u32 scratch [ 1];
- u32 pm0_data_addr [ 1];
- u32 pm1_data_addr [ 1];
- u32 done_pos [ 1];
- u32 startpos [ 1];
- u32 targtbl [ 1];
- };
- /*
- * Script fragments used at initialisations.
- * Only runs out of main memory.
- */
- struct SYM_FWZ_SCR {
- u32 snooptest [ 6];
- u32 snoopend [ 2];
- #ifdef SYM_OPT_NO_BUS_MEMORY_MAPPING
- u32 start_ram [ 1];
- u32 scripta0_ba [ 4];
- u32 start_ram64 [ 3];
- u32 scripta0_ba64 [ 3];
- u32 scriptb0_ba64 [ 6];
- u32 ram_seg64 [ 1];
- #endif
- };
- static struct SYM_FWA_SCR SYM_FWA_SCR = {
- /*--------------------------< START >----------------------------*/ {
- /*
- * Switch the LED on.
- * Will be patched with a NO_OP if LED
- * not needed or not desired.
- */
- SCR_REG_REG (gpreg, SCR_AND, 0xfe),
- 0,
- /*
- * Clear SIGP.
- */
- SCR_FROM_REG (ctest2),
- 0,
- /*
- * Stop here if the C code wants to perform
- * some error recovery procedure manually.
- * (Indicate this by setting SEM in ISTAT)
- */
- SCR_FROM_REG (istat),
- 0,
- /*
- * Report to the C code the next position in
- * the start queue the SCRIPTS will schedule.
- * The C code must not change SCRATCHA.
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDR_B (startpos),
- SCR_INT ^ IFTRUE (MASK (SEM, SEM)),
- SIR_SCRIPT_STOPPED,
- /*
- * Start the next job.
- *
- * @DSA = start point for this job.
- * SCRATCHA = address of this job in the start queue.
- *
- * We will restore startpos with SCRATCHA if we fails the
- * arbitration or if it is the idle job.
- *
- * The below GETJOB_BEGIN to GETJOB_END section of SCRIPTS
- * is a critical path. If it is partially executed, it then
- * may happen that the job address is not yet in the DSA
- * and the the next queue position points to the next JOB.
- */
- SCR_LOAD_ABS (dsa, 4),
- PADDR_B (startpos),
- SCR_LOAD_REL (temp, 4),
- 4,
- }/*-------------------------< GETJOB_BEGIN >---------------------*/,{
- SCR_STORE_ABS (temp, 4),
- PADDR_B (startpos),
- SCR_LOAD_REL (dsa, 4),
- 0,
- }/*-------------------------< GETJOB_END >-----------------------*/,{
- SCR_LOAD_REL (temp, 4),
- 0,
- SCR_RETURN,
- 0,
- }/*-------------------------< SELECT >---------------------------*/,{
- /*
- * DSA contains the address of a scheduled
- * data structure.
- *
- * SCRATCHA contains the address of the start queue
- * entry which points to the next job.
- *
- * Set Initiator mode.
- *
- * (Target mode is left as an exercise for the reader)
- */
- #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
- SCR_CLR (SCR_TRG),
- 0,
- #endif
- /*
- * And try to select this target.
- */
- SCR_SEL_TBL_ATN ^ offsetof (struct sym_dsb, select),
- PADDR_A (ungetjob),
- /*
- * Now there are 4 possibilities:
- *
- * (1) The chip looses arbitration.
- * This is ok, because it will try again,
- * when the bus becomes idle.
- * (But beware of the timeout function!)
- *
- * (2) The chip is reselected.
- * Then the script processor takes the jump
- * to the RESELECT label.
- *
- * (3) The chip wins arbitration.
- * Then it will execute SCRIPTS instruction until
- * the next instruction that checks SCSI phase.
- * Then will stop and wait for selection to be
- * complete or selection time-out to occur.
- *
- * After having won arbitration, the SCRIPTS
- * processor is able to execute instructions while
- * the SCSI core is performing SCSI selection.
- */
- /*
- * Initialize the status registers
- */
- SCR_LOAD_REL (scr0, 4),
- offsetof (struct sym_ccb, phys.head.status),
- /*
- * We may need help from CPU if the DMA segment
- * registers aren't up-to-date for this IO.
- * Patched with NOOP for chips that donnot
- * support DAC addressing.
- */
- #if SYM_CONF_DMA_ADDRESSING_MODE == 2
- }/*-------------------------< IS_DMAP_DIRTY >--------------------*/,{
- SCR_FROM_REG (HX_REG),
- 0,
- SCR_INT ^ IFTRUE (MASK (HX_DMAP_DIRTY, HX_DMAP_DIRTY)),
- SIR_DMAP_DIRTY,
- #endif
- }/*-------------------------< WF_SEL_DONE >----------------------*/,{
- SCR_INT ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- SIR_SEL_ATN_NO_MSG_OUT,
- }/*-------------------------< SEL_DONE >-------------------------*/,{
- /*
- * C1010-33 errata work-around.
- * Due to a race, the SCSI core may not have
- * loaded SCNTL3 on SEL_TBL instruction.
- * We reload it once phase is stable.
- * Patched with a NOOP for other chips.
- */
- SCR_LOAD_REL (scntl3, 1),
- offsetof(struct sym_dsb, select.sel_scntl3),
- }/*-------------------------< SEND_IDENT >-----------------------*/,{
- /*
- * Selection complete.
- * Send the IDENTIFY and possibly the TAG message
- * and negotiation message if present.
- */
- SCR_MOVE_TBL ^ SCR_MSG_OUT,
- offsetof (struct sym_dsb, smsg),
- }/*-------------------------< SELECT2 >--------------------------*/,{
- #ifdef SYM_CONF_IARB_SUPPORT
- /*
- * Set IMMEDIATE ARBITRATION if we have been given
- * a hint to do so. (Some job to do after this one).
- */
- SCR_FROM_REG (HF_REG),
- 0,
- SCR_JUMPR ^ IFFALSE (MASK (HF_HINT_IARB, HF_HINT_IARB)),
- 8,
- SCR_REG_REG (scntl1, SCR_OR, IARB),
- 0,
- #endif
- /*
- * Anticipate the COMMAND phase.
- * This is the PHASE we expect at this point.
- */
- SCR_JUMP ^ IFFALSE (WHEN (SCR_COMMAND)),
- PADDR_A (sel_no_cmd),
- }/*-------------------------< COMMAND >--------------------------*/,{
- /*
- * ... and send the command
- */
- SCR_MOVE_TBL ^ SCR_COMMAND,
- offsetof (struct sym_dsb, cmd),
- }/*-------------------------< DISPATCH >-------------------------*/,{
- /*
- * MSG_IN is the only phase that shall be
- * entered at least once for each (re)selection.
- * So we test it first.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR_A (msg_in),
- SCR_JUMP ^ IFTRUE (IF (SCR_DATA_OUT)),
- PADDR_A (datao_phase),
- SCR_JUMP ^ IFTRUE (IF (SCR_DATA_IN)),
- PADDR_A (datai_phase),
- SCR_JUMP ^ IFTRUE (IF (SCR_STATUS)),
- PADDR_A (status),
- SCR_JUMP ^ IFTRUE (IF (SCR_COMMAND)),
- PADDR_A (command),
- SCR_JUMP ^ IFTRUE (IF (SCR_MSG_OUT)),
- PADDR_B (msg_out),
- /*
- * Discard as many illegal phases as
- * required and tell the C code about.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_ILG_OUT)),
- 16,
- SCR_MOVE_ABS (1) ^ SCR_ILG_OUT,
- HADDR_1 (scratch),
- SCR_JUMPR ^ IFTRUE (WHEN (SCR_ILG_OUT)),
- -16,
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_ILG_IN)),
- 16,
- SCR_MOVE_ABS (1) ^ SCR_ILG_IN,
- HADDR_1 (scratch),
- SCR_JUMPR ^ IFTRUE (WHEN (SCR_ILG_IN)),
- -16,
- SCR_INT,
- SIR_BAD_PHASE,
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< SEL_NO_CMD >-----------------------*/,{
- /*
- * The target does not switch to command
- * phase after IDENTIFY has been sent.
- *
- * If it stays in MSG OUT phase send it
- * the IDENTIFY again.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)),
- PADDR_B (resend_ident),
- /*
- * If target does not switch to MSG IN phase
- * and we sent a negotiation, assert the
- * failure immediately.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR_A (dispatch),
- SCR_FROM_REG (HS_REG),
- 0,
- SCR_INT ^ IFTRUE (DATA (HS_NEGOTIATE)),
- SIR_NEGO_FAILED,
- /*
- * Jump to dispatcher.
- */
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< INIT >-----------------------------*/,{
- /*
- * Wait for the SCSI RESET signal to be
- * inactive before restarting operations,
- * since the chip may hang on SEL_ATN
- * if SCSI RESET is active.
- */
- SCR_FROM_REG (sstat0),
- 0,
- SCR_JUMPR ^ IFTRUE (MASK (IRST, IRST)),
- -16,
- SCR_JUMP,
- PADDR_A (start),
- }/*-------------------------< CLRACK >---------------------------*/,{
- /*
- * Terminate possible pending message phase.
- */
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DATAI_DONE >-----------------------*/,{
- /*
- * Save current pointer to LASTP.
- */
- SCR_STORE_REL (temp, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- /*
- * If the SWIDE is not full, jump to dispatcher.
- * We anticipate a STATUS phase.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_JUMP ^ IFTRUE (MASK (WSR, WSR)),
- PADDR_A (datai_done_wsr),
- SCR_JUMP ^ IFTRUE (WHEN (SCR_STATUS)),
- PADDR_A (status),
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DATAI_DONE_WSR >-------------------*/,{
- /*
- * The SWIDE is full.
- * Clear this condition.
- */
- SCR_REG_REG (scntl2, SCR_OR, WSR),
- 0,
- /*
- * We are expecting an IGNORE RESIDUE message
- * from the device, otherwise we are in data
- * overrun condition. Check against MSG_IN phase.
- */
- SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)),
- SIR_SWIDE_OVERRUN,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
- PADDR_A (dispatch),
- /*
- * We are in MSG_IN phase,
- * Read the first byte of the message.
- * If it is not an IGNORE RESIDUE message,
- * signal overrun and jump to message
- * processing.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (msgin[0]),
- SCR_INT ^ IFFALSE (DATA (M_IGN_RESIDUE)),
- SIR_SWIDE_OVERRUN,
- SCR_JUMP ^ IFFALSE (DATA (M_IGN_RESIDUE)),
- PADDR_A (msg_in2),
- /*
- * We got the message we expected.
- * Read the 2nd byte, and jump to dispatcher.
- */
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (msgin[1]),
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DATAO_DONE >-----------------------*/,{
- /*
- * Save current pointer to LASTP.
- */
- SCR_STORE_REL (temp, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- /*
- * If the SODL is not full jump to dispatcher.
- * We anticipate a STATUS phase.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_JUMP ^ IFTRUE (MASK (WSS, WSS)),
- PADDR_A (datao_done_wss),
- SCR_JUMP ^ IFTRUE (WHEN (SCR_STATUS)),
- PADDR_A (status),
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DATAO_DONE_WSS >-------------------*/,{
- /*
- * The SODL is full, clear this condition.
- */
- SCR_REG_REG (scntl2, SCR_OR, WSS),
- 0,
- /*
- * And signal a DATA UNDERRUN condition
- * to the C code.
- */
- SCR_INT,
- SIR_SODL_UNDERRUN,
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DATAI_PHASE >----------------------*/,{
- /*
- * Jump to current pointer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- SCR_RETURN,
- 0,
- }/*-------------------------< DATAO_PHASE >----------------------*/,{
- /*
- * C1010-66 errata work-around.
- * Extra clocks of data hold must be inserted
- * in DATA OUT phase on 33 MHz PCI BUS.
- * Patched with a NOOP for other chips.
- */
- SCR_REG_REG (scntl4, SCR_OR, (XCLKH_DT|XCLKH_ST)),
- 0,
- /*
- * Jump to current pointer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- SCR_RETURN,
- 0,
- }/*-------------------------< MSG_IN >---------------------------*/,{
- /*
- * Get the first byte of the message.
- *
- * The script processor doesn't negate the
- * ACK signal after this transfer.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (msgin[0]),
- }/*-------------------------< MSG_IN2 >--------------------------*/,{
- /*
- * Check first against 1 byte messages
- * that we handle from SCRIPTS.
- */
- SCR_JUMP ^ IFTRUE (DATA (M_COMPLETE)),
- PADDR_A (complete),
- SCR_JUMP ^ IFTRUE (DATA (M_DISCONNECT)),
- PADDR_A (disconnect),
- SCR_JUMP ^ IFTRUE (DATA (M_SAVE_DP)),
- PADDR_A (save_dp),
- SCR_JUMP ^ IFTRUE (DATA (M_RESTORE_DP)),
- PADDR_A (restore_dp),
- /*
- * We handle all other messages from the
- * C code, so no need to waste on-chip RAM
- * for those ones.
- */
- SCR_JUMP,
- PADDR_B (msg_in_etc),
- }/*-------------------------< STATUS >---------------------------*/,{
- /*
- * get the status
- */
- SCR_MOVE_ABS (1) ^ SCR_STATUS,
- HADDR_1 (scratch),
- #ifdef SYM_CONF_IARB_SUPPORT
- /*
- * If STATUS is not GOOD, clear IMMEDIATE ARBITRATION,
- * since we may have to tamper the start queue from
- * the C code.
- */
- SCR_JUMPR ^ IFTRUE (DATA (S_GOOD)),
- 8,
- SCR_REG_REG (scntl1, SCR_AND, ~IARB),
- 0,
- #endif
- /*
- * save status to scsi_status.
- * mark as complete.
- */
- SCR_TO_REG (SS_REG),
- 0,
- SCR_LOAD_REG (HS_REG, HS_COMPLETE),
- 0,
- /*
- * Anticipate the MESSAGE PHASE for
- * the TASK COMPLETE message.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR_A (msg_in),
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< COMPLETE >-------------------------*/,{
- /*
- * Complete message.
- *
- * When we terminate the cycle by clearing ACK,
- * the target may disconnect immediately.
- *
- * We don't want to be told of an "unexpected disconnect",
- * so we disable this feature.
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- /*
- * Terminate cycle ...
- */
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- /*
- * ... and wait for the disconnect.
- */
- SCR_WAIT_DISC,
- 0,
- }/*-------------------------< COMPLETE2 >------------------------*/,{
- /*
- * Save host status.
- */
- SCR_STORE_REL (scr0, 4),
- offsetof (struct sym_ccb, phys.head.status),
- /*
- * Some bridges may reorder DMA writes to memory.
- * We donnot want the CPU to deal with completions
- * without all the posted write having been flushed
- * to memory. This DUMMY READ should flush posted
- * buffers prior to the CPU having to deal with
- * completions.
- */
- SCR_LOAD_REL (scr0, 4), /* DUMMY READ */
- offsetof (struct sym_ccb, phys.head.status),
- /*
- * If command resulted in not GOOD status,
- * call the C code if needed.
- */
- SCR_FROM_REG (SS_REG),
- 0,
- SCR_CALL ^ IFFALSE (DATA (S_GOOD)),
- PADDR_B (bad_status),
- /*
- * If we performed an auto-sense, call
- * the C code to synchronyze task aborts
- * with UNIT ATTENTION conditions.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- SCR_JUMP ^ IFFALSE (MASK (0 ,(HF_SENSE|HF_EXT_ERR))),
- PADDR_A (complete_error),
- }/*-------------------------< DONE >-----------------------------*/,{
- /*
- * Copy the DSA to the DONE QUEUE and
- * signal completion to the host.
- * If we are interrupted between DONE
- * and DONE_END, we must reset, otherwise
- * the completed CCB may be lost.
- */
- SCR_STORE_ABS (dsa, 4),
- PADDR_B (scratch),
- SCR_LOAD_ABS (dsa, 4),
- PADDR_B (done_pos),
- SCR_LOAD_ABS (scratcha, 4),
- PADDR_B (scratch),
- SCR_STORE_REL (scratcha, 4),
- 0,
- /*
- * The instruction below reads the DONE QUEUE next
- * free position from memory.
- * In addition it ensures that all PCI posted writes
- * are flushed and so the DSA value of the done
- * CCB is visible by the CPU before INTFLY is raised.
- */
- SCR_LOAD_REL (scratcha, 4),
- 4,
- SCR_INT_FLY,
- 0,
- SCR_STORE_ABS (scratcha, 4),
- PADDR_B (done_pos),
- }/*-------------------------< DONE_END >-------------------------*/,{
- SCR_JUMP,
- PADDR_A (start),
- }/*-------------------------< COMPLETE_ERROR >-------------------*/,{
- SCR_LOAD_ABS (scratcha, 4),
- PADDR_B (startpos),
- SCR_INT,
- SIR_COMPLETE_ERROR,
- }/*-------------------------< SAVE_DP >--------------------------*/,{
- /*
- * Clear ACK immediately.
- * No need to delay it.
- */
- SCR_CLR (SCR_ACK),
- 0,
- /*
- * Keep track we received a SAVE DP, so
- * we will switch to the other PM context
- * on the next PM since the DP may point
- * to the current PM context.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_DP_SAVED),
- 0,
- /*
- * SAVE_DP message:
- * Copy LASTP to SAVEP.
- */
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.savep),
- /*
- * Anticipate the MESSAGE PHASE for
- * the DISCONNECT message.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_IN)),
- PADDR_A (msg_in),
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< RESTORE_DP >-----------------------*/,{
- /*
- * Clear ACK immediately.
- * No need to delay it.
- */
- SCR_CLR (SCR_ACK),
- 0,
- /*
- * Copy SAVEP to LASTP.
- */
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.savep),
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DISCONNECT >-----------------------*/,{
- /*
- * DISCONNECTing ...
- *
- * disable the "unexpected disconnect" feature,
- * and remove the ACK signal.
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- /*
- * Wait for the disconnect.
- */
- SCR_WAIT_DISC,
- 0,
- /*
- * Status is: DISCONNECTED.
- */
- SCR_LOAD_REG (HS_REG, HS_DISCONNECT),
- 0,
- /*
- * Save host status.
- */
- SCR_STORE_REL (scr0, 4),
- offsetof (struct sym_ccb, phys.head.status),
- SCR_JUMP,
- PADDR_A (start),
- }/*-------------------------< IDLE >-----------------------------*/,{
- /*
- * Nothing to do?
- * Switch the LED off and wait for reselect.
- * Will be patched with a NO_OP if LED
- * not needed or not desired.
- */
- SCR_REG_REG (gpreg, SCR_OR, 0x01),
- 0,
- #ifdef SYM_CONF_IARB_SUPPORT
- SCR_JUMPR,
- 8,
- #endif
- }/*-------------------------< UNGETJOB >-------------------------*/,{
- #ifdef SYM_CONF_IARB_SUPPORT
- /*
- * Set IMMEDIATE ARBITRATION, for the next time.
- * This will give us better chance to win arbitration
- * for the job we just wanted to do.
- */
- SCR_REG_REG (scntl1, SCR_OR, IARB),
- 0,
- #endif
- /*
- * We are not able to restart the SCRIPTS if we are
- * interrupted and these instruction haven't been
- * all executed. BTW, this is very unlikely to
- * happen, but we check that from the C code.
- */
- SCR_LOAD_REG (dsa, 0xff),
- 0,
- SCR_STORE_ABS (scratcha, 4),
- PADDR_B (startpos),
- }/*-------------------------< RESELECT >-------------------------*/,{
- #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
- /*
- * Make sure we are in initiator mode.
- */
- SCR_CLR (SCR_TRG),
- 0,
- #endif
- /*
- * Sleep waiting for a reselection.
- */
- SCR_WAIT_RESEL,
- PADDR_A(start),
- }/*-------------------------< RESELECTED >-----------------------*/,{
- /*
- * Switch the LED on.
- * Will be patched with a NO_OP if LED
- * not needed or not desired.
- */
- SCR_REG_REG (gpreg, SCR_AND, 0xfe),
- 0,
- /*
- * load the target id into the sdid
- */
- SCR_REG_SFBR (ssid, SCR_AND, 0x8F),
- 0,
- SCR_TO_REG (sdid),
- 0,
- /*
- * Load the target control block address
- */
- SCR_LOAD_ABS (dsa, 4),
- PADDR_B (targtbl),
- SCR_SFBR_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_AND, 0x3c),
- 0,
- SCR_LOAD_REL (dsa, 4),
- 0,
- /*
- * We expect MESSAGE IN phase.
- * If not, get help from the C code.
- */
- SCR_INT ^ IFFALSE (WHEN (SCR_MSG_IN)),
- SIR_RESEL_NO_MSG_IN,
- /*
- * Load the legacy synchronous transfer registers.
- */
- SCR_LOAD_REL (scntl3, 1),
- offsetof(struct sym_tcb, head.wval),
- SCR_LOAD_REL (sxfer, 1),
- offsetof(struct sym_tcb, head.sval),
- }/*-------------------------< RESEL_SCNTL4 >---------------------*/,{
- /*
- * The C1010 uses a new synchronous timing scheme.
- * Will be patched with a NO_OP if not a C1010.
- */
- SCR_LOAD_REL (scntl4, 1),
- offsetof(struct sym_tcb, head.uval),
- /*
- * Get the IDENTIFY message.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (msgin),
- /*
- * If IDENTIFY LUN #0, use a faster path
- * to find the LCB structure.
- */
- SCR_JUMP ^ IFTRUE (MASK (0x80, 0xbf)),
- PADDR_A (resel_lun0),
- /*
- * If message isn't an IDENTIFY,
- * tell the C code about.
- */
- SCR_INT ^ IFFALSE (MASK (0x80, 0x80)),
- SIR_RESEL_NO_IDENTIFY,
- /*
- * It is an IDENTIFY message,
- * Load the LUN control block address.
- */
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct sym_tcb, head.luntbl_sa),
- SCR_SFBR_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_SHL, 0),
- 0,
- SCR_REG_REG (dsa, SCR_AND, 0xfc),
- 0,
- SCR_LOAD_REL (dsa, 4),
- 0,
- SCR_JUMPR,
- 8,
- }/*-------------------------< RESEL_LUN0 >-----------------------*/,{
- /*
- * LUN 0 special case (but usual one :))
- */
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct sym_tcb, head.lun0_sa),
- /*
- * Jump indirectly to the reselect action for this LUN.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof(struct sym_lcb, head.resel_sa),
- SCR_RETURN,
- 0,
- /* In normal situations, we jump to RESEL_TAG or RESEL_NO_TAG */
- }/*-------------------------< RESEL_TAG >------------------------*/,{
- /*
- * ACK the IDENTIFY previously received.
- */
- SCR_CLR (SCR_ACK),
- 0,
- /*
- * It shall be a tagged command.
- * Read SIMPLE+TAG.
- * The C code will deal with errors.
- * Agressive optimization, is'nt it? :)
- */
- SCR_MOVE_ABS (2) ^ SCR_MSG_IN,
- HADDR_1 (msgin),
- /*
- * Load the pointer to the tagged task
- * table for this LUN.
- */
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct sym_lcb, head.itlq_tbl_sa),
- /*
- * The SIDL still contains the TAG value.
- * Agressive optimization, isn't it? :):)
- */
- SCR_REG_SFBR (sidl, SCR_SHL, 0),
- 0,
- #if SYM_CONF_MAX_TASK*4 > 512
- SCR_JUMPR ^ IFFALSE (CARRYSET),
- 8,
- SCR_REG_REG (dsa1, SCR_OR, 2),
- 0,
- SCR_REG_REG (sfbr, SCR_SHL, 0),
- 0,
- SCR_JUMPR ^ IFFALSE (CARRYSET),
- 8,
- SCR_REG_REG (dsa1, SCR_OR, 1),
- 0,
- #elif SYM_CONF_MAX_TASK*4 > 256
- SCR_JUMPR ^ IFFALSE (CARRYSET),
- 8,
- SCR_REG_REG (dsa1, SCR_OR, 1),
- 0,
- #endif
- /*
- * Retrieve the DSA of this task.
- * JUMP indirectly to the restart point of the CCB.
- */
- SCR_SFBR_REG (dsa, SCR_AND, 0xfc),
- 0,
- SCR_LOAD_REL (dsa, 4),
- 0,
- SCR_LOAD_REL (temp, 4),
- offsetof(struct sym_ccb, phys.head.go.restart),
- SCR_RETURN,
- 0,
- /* In normal situations we branch to RESEL_DSA */
- }/*-------------------------< RESEL_DSA >------------------------*/,{
- /*
- * ACK the IDENTIFY or TAG previously received.
- */
- SCR_CLR (SCR_ACK),
- 0,
- }/*-------------------------< RESEL_DSA1 >-----------------------*/,{
- /*
- * Initialize the status registers
- */
- SCR_LOAD_REL (scr0, 4),
- offsetof (struct sym_ccb, phys.head.status),
- /*
- * Jump to dispatcher.
- */
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< RESEL_NO_TAG >---------------------*/,{
- /*
- * Load the DSA with the unique ITL task.
- */
- SCR_LOAD_REL (dsa, 4),
- offsetof(struct sym_lcb, head.itl_task_sa),
- /*
- * JUMP indirectly to the restart point of the CCB.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof(struct sym_ccb, phys.head.go.restart),
- SCR_RETURN,
- 0,
- /* In normal situations we branch to RESEL_DSA */
- }/*-------------------------< DATA_IN >--------------------------*/,{
- /*
- * Because the size depends on the
- * #define SYM_CONF_MAX_SG parameter,
- * it is filled in at runtime.
- *
- * ##===========< i=0; i<SYM_CONF_MAX_SG >=========
- * || SCR_CHMOV_TBL ^ SCR_DATA_IN,
- * || offsetof (struct sym_dsb, data[ i]),
- * ##==========================================
- */
- 0
- }/*-------------------------< DATA_IN2 >-------------------------*/,{
- SCR_CALL,
- PADDR_A (datai_done),
- SCR_JUMP,
- PADDR_B (data_ovrun),
- }/*-------------------------< DATA_OUT >-------------------------*/,{
- /*
- * Because the size depends on the
- * #define SYM_CONF_MAX_SG parameter,
- * it is filled in at runtime.
- *
- * ##===========< i=0; i<SYM_CONF_MAX_SG >=========
- * || SCR_CHMOV_TBL ^ SCR_DATA_OUT,
- * || offsetof (struct sym_dsb, data[ i]),
- * ##==========================================
- */
- 0
- }/*-------------------------< DATA_OUT2 >------------------------*/,{
- SCR_CALL,
- PADDR_A (datao_done),
- SCR_JUMP,
- PADDR_B (data_ovrun),
- }/*-------------------------< PM0_DATA >-------------------------*/,{
- /*
- * Read our host flags to SFBR, so we will be able
- * to check against the data direction we expect.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- /*
- * Check against actual DATA PHASE.
- */
- SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
- PADDR_A (pm0_data_out),
- /*
- * Actual phase is DATA IN.
- * Check against expected direction.
- */
- SCR_JUMP ^ IFFALSE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDR_B (data_ovrun),
- /*
- * Keep track we are moving data from the
- * PM0 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM0),
- 0,
- /*
- * Move the data to memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct sym_ccb, phys.pm0.sg),
- SCR_JUMP,
- PADDR_A (pm0_data_end),
- }/*-------------------------< PM0_DATA_OUT >---------------------*/,{
- /*
- * Actual phase is DATA OUT.
- * Check against expected direction.
- */
- SCR_JUMP ^ IFTRUE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDR_B (data_ovrun),
- /*
- * Keep track we are moving data from the
- * PM0 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM0),
- 0,
- /*
- * Move the data from memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_OUT,
- offsetof (struct sym_ccb, phys.pm0.sg),
- }/*-------------------------< PM0_DATA_END >---------------------*/,{
- /*
- * Clear the flag that told we were moving
- * data from the PM0 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_AND, (~HF_IN_PM0)),
- 0,
- /*
- * Return to the previous DATA script which
- * is guaranteed by design (if no bug) to be
- * the main DATA script for this transfer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct sym_ccb, phys.pm0.ret),
- SCR_RETURN,
- 0,
- }/*-------------------------< PM1_DATA >-------------------------*/,{
- /*
- * Read our host flags to SFBR, so we will be able
- * to check against the data direction we expect.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- /*
- * Check against actual DATA PHASE.
- */
- SCR_JUMP ^ IFFALSE (WHEN (SCR_DATA_IN)),
- PADDR_A (pm1_data_out),
- /*
- * Actual phase is DATA IN.
- * Check against expected direction.
- */
- SCR_JUMP ^ IFFALSE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDR_B (data_ovrun),
- /*
- * Keep track we are moving data from the
- * PM1 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM1),
- 0,
- /*
- * Move the data to memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct sym_ccb, phys.pm1.sg),
- SCR_JUMP,
- PADDR_A (pm1_data_end),
- }/*-------------------------< PM1_DATA_OUT >---------------------*/,{
- /*
- * Actual phase is DATA OUT.
- * Check against expected direction.
- */
- SCR_JUMP ^ IFTRUE (MASK (HF_DATA_IN, HF_DATA_IN)),
- PADDR_B (data_ovrun),
- /*
- * Keep track we are moving data from the
- * PM1 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_OR, HF_IN_PM1),
- 0,
- /*
- * Move the data from memory.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_OUT,
- offsetof (struct sym_ccb, phys.pm1.sg),
- }/*-------------------------< PM1_DATA_END >---------------------*/,{
- /*
- * Clear the flag that told we were moving
- * data from the PM1 DATA mini-script.
- */
- SCR_REG_REG (HF_REG, SCR_AND, (~HF_IN_PM1)),
- 0,
- /*
- * Return to the previous DATA script which
- * is guaranteed by design (if no bug) to be
- * the main DATA script for this transfer.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct sym_ccb, phys.pm1.ret),
- SCR_RETURN,
- 0,
- }/*-------------------------<>-----------------------------------*/
- };
- static struct SYM_FWB_SCR SYM_FWB_SCR = {
- /*--------------------------< START64 >--------------------------*/ {
- /*
- * SCRIPT entry point for the 895A, 896 and 1010.
- * For now, there is no specific stuff for those
- * chips at this point, but this may come.
- */
- SCR_JUMP,
- PADDR_A (init),
- }/*-------------------------< NO_DATA >--------------------------*/,{
- SCR_JUMP,
- PADDR_B (data_ovrun),
- }/*-------------------------< SEL_FOR_ABORT >--------------------*/,{
- /*
- * We are jumped here by the C code, if we have
- * some target to reset or some disconnected
- * job to abort. Since error recovery is a serious
- * busyness, we will really reset the SCSI BUS, if
- * case of a SCSI interrupt occuring in this path.
- */
- #ifdef SYM_CONF_TARGET_ROLE_SUPPORT
- /*
- * Set initiator mode.
- */
- SCR_CLR (SCR_TRG),
- 0,
- #endif
- /*
- * And try to select this target.
- */
- SCR_SEL_TBL_ATN ^ offsetof (struct sym_hcb, abrt_sel),
- PADDR_A (reselect),
- /*
- * Wait for the selection to complete or
- * the selection to time out.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- -8,
- /*
- * Call the C code.
- */
- SCR_INT,
- SIR_TARGET_SELECTED,
- /*
- * The C code should let us continue here.
- * Send the 'kiss of death' message.
- * We expect an immediate disconnect once
- * the target has eaten the message.
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- SCR_MOVE_TBL ^ SCR_MSG_OUT,
- offsetof (struct sym_hcb, abrt_tbl),
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- SCR_WAIT_DISC,
- 0,
- /*
- * Tell the C code that we are done.
- */
- SCR_INT,
- SIR_ABORT_SENT,
- }/*-------------------------< SEL_FOR_ABORT_1 >------------------*/,{
- /*
- * Jump at scheduler.
- */
- SCR_JUMP,
- PADDR_A (start),
- }/*-------------------------< MSG_IN_ETC >-----------------------*/,{
- /*
- * If it is an EXTENDED (variable size message)
- * Handle it.
- */
- SCR_JUMP ^ IFTRUE (DATA (M_EXTENDED)),
- PADDR_B (msg_extended),
- /*
- * Let the C code handle any other
- * 1 byte message.
- */
- SCR_JUMP ^ IFTRUE (MASK (0x00, 0xf0)),
- PADDR_B (msg_received),
- SCR_JUMP ^ IFTRUE (MASK (0x10, 0xf0)),
- PADDR_B (msg_received),
- /*
- * We donnot handle 2 bytes messages from SCRIPTS.
- * So, let the C code deal with these ones too.
- */
- SCR_JUMP ^ IFFALSE (MASK (0x20, 0xf0)),
- PADDR_B (msg_weird_seen),
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (msgin[1]),
- }/*-------------------------< MSG_RECEIVED >---------------------*/,{
- SCR_LOAD_REL (scratcha, 4), /* DUMMY READ */
- 0,
- SCR_INT,
- SIR_MSG_RECEIVED,
- }/*-------------------------< MSG_WEIRD_SEEN >-------------------*/,{
- SCR_LOAD_REL (scratcha, 4), /* DUMMY READ */
- 0,
- SCR_INT,
- SIR_MSG_WEIRD,
- }/*-------------------------< MSG_EXTENDED >---------------------*/,{
- /*
- * Clear ACK and get the next byte
- * assumed to be the message length.
- */
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (msgin[1]),
- /*
- * Try to catch some unlikely situations as 0 length
- * or too large the length.
- */
- SCR_JUMP ^ IFTRUE (DATA (0)),
- PADDR_B (msg_weird_seen),
- SCR_TO_REG (scratcha),
- 0,
- SCR_REG_REG (sfbr, SCR_ADD, (256-8)),
- 0,
- SCR_JUMP ^ IFTRUE (CARRYSET),
- PADDR_B (msg_weird_seen),
- /*
- * We donnot handle extended messages from SCRIPTS.
- * Read the amount of data correponding to the
- * message length and call the C code.
- */
- SCR_STORE_REL (scratcha, 1),
- offsetof (struct sym_dsb, smsg_ext.size),
- SCR_CLR (SCR_ACK),
- 0,
- SCR_MOVE_TBL ^ SCR_MSG_IN,
- offsetof (struct sym_dsb, smsg_ext),
- SCR_JUMP,
- PADDR_B (msg_received),
- }/*-------------------------< MSG_BAD >--------------------------*/,{
- /*
- * unimplemented message - reject it.
- */
- SCR_INT,
- SIR_REJECT_TO_SEND,
- SCR_SET (SCR_ATN),
- 0,
- SCR_JUMP,
- PADDR_A (clrack),
- }/*-------------------------< MSG_WEIRD >------------------------*/,{
- /*
- * weird message received
- * ignore all MSG IN phases and reject it.
- */
- SCR_INT,
- SIR_REJECT_TO_SEND,
- SCR_SET (SCR_ATN),
- 0,
- }/*-------------------------< MSG_WEIRD1 >-----------------------*/,{
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_IN)),
- PADDR_A (dispatch),
- SCR_MOVE_ABS (1) ^ SCR_MSG_IN,
- HADDR_1 (scratch),
- SCR_JUMP,
- PADDR_B (msg_weird1),
- }/*-------------------------< WDTR_RESP >------------------------*/,{
- /*
- * let the target fetch our answer.
- */
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- PADDR_B (nego_bad_phase),
- }/*-------------------------< SEND_WDTR >------------------------*/,{
- /*
- * Send the M_X_WIDE_REQ
- */
- SCR_MOVE_ABS (4) ^ SCR_MSG_OUT,
- HADDR_1 (msgout),
- SCR_JUMP,
- PADDR_B (msg_out_done),
- }/*-------------------------< SDTR_RESP >------------------------*/,{
- /*
- * let the target fetch our answer.
- */
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- PADDR_B (nego_bad_phase),
- }/*-------------------------< SEND_SDTR >------------------------*/,{
- /*
- * Send the M_X_SYNC_REQ
- */
- SCR_MOVE_ABS (5) ^ SCR_MSG_OUT,
- HADDR_1 (msgout),
- SCR_JUMP,
- PADDR_B (msg_out_done),
- }/*-------------------------< PPR_RESP >-------------------------*/,{
- /*
- * let the target fetch our answer.
- */
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- SCR_JUMP ^ IFFALSE (WHEN (SCR_MSG_OUT)),
- PADDR_B (nego_bad_phase),
- }/*-------------------------< SEND_PPR >-------------------------*/,{
- /*
- * Send the M_X_PPR_REQ
- */
- SCR_MOVE_ABS (8) ^ SCR_MSG_OUT,
- HADDR_1 (msgout),
- SCR_JUMP,
- PADDR_B (msg_out_done),
- }/*-------------------------< NEGO_BAD_PHASE >-------------------*/,{
- SCR_INT,
- SIR_NEGO_PROTO,
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< MSG_OUT >--------------------------*/,{
- /*
- * The target requests a message.
- * We donnot send messages that may
- * require the device to go to bus free.
- */
- SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
- HADDR_1 (msgout),
- /*
- * ... wait for the next phase
- * if it's a message out, send it again, ...
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_MSG_OUT)),
- PADDR_B (msg_out),
- }/*-------------------------< MSG_OUT_DONE >---------------------*/,{
- /*
- * Let the C code be aware of the
- * sent message and clear the message.
- */
- SCR_INT,
- SIR_MSG_OUT_DONE,
- /*
- * ... and process the next phase
- */
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< DATA_OVRUN >-----------------------*/,{
- /*
- * Use scratcha to count the extra bytes.
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDR_B (zero),
- }/*-------------------------< DATA_OVRUN1 >----------------------*/,{
- /*
- * The target may want to transfer too much data.
- *
- * If phase is DATA OUT write 1 byte and count it.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_DATA_OUT)),
- 16,
- SCR_CHMOV_ABS (1) ^ SCR_DATA_OUT,
- HADDR_1 (scratch),
- SCR_JUMP,
- PADDR_B (data_ovrun2),
- /*
- * If WSR is set, clear this condition, and
- * count this byte.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_JUMPR ^ IFFALSE (MASK (WSR, WSR)),
- 16,
- SCR_REG_REG (scntl2, SCR_OR, WSR),
- 0,
- SCR_JUMP,
- PADDR_B (data_ovrun2),
- /*
- * Finally check against DATA IN phase.
- * Signal data overrun to the C code
- * and jump to dispatcher if not so.
- * Read 1 byte otherwise and count it.
- */
- SCR_JUMPR ^ IFTRUE (WHEN (SCR_DATA_IN)),
- 16,
- SCR_INT,
- SIR_DATA_OVERRUN,
- SCR_JUMP,
- PADDR_A (dispatch),
- SCR_CHMOV_ABS (1) ^ SCR_DATA_IN,
- HADDR_1 (scratch),
- }/*-------------------------< DATA_OVRUN2 >----------------------*/,{
- /*
- * Count this byte.
- * This will allow to return a negative
- * residual to user.
- */
- SCR_REG_REG (scratcha, SCR_ADD, 0x01),
- 0,
- SCR_REG_REG (scratcha1, SCR_ADDC, 0),
- 0,
- SCR_REG_REG (scratcha2, SCR_ADDC, 0),
- 0,
- /*
- * .. and repeat as required.
- */
- SCR_JUMP,
- PADDR_B (data_ovrun1),
- }/*-------------------------< ABORT_RESEL >----------------------*/,{
- SCR_SET (SCR_ATN),
- 0,
- SCR_CLR (SCR_ACK),
- 0,
- /*
- * send the abort/abortag/reset message
- * we expect an immediate disconnect
- */
- SCR_REG_REG (scntl2, SCR_AND, 0x7f),
- 0,
- SCR_MOVE_ABS (1) ^ SCR_MSG_OUT,
- HADDR_1 (msgout),
- SCR_CLR (SCR_ACK|SCR_ATN),
- 0,
- SCR_WAIT_DISC,
- 0,
- SCR_INT,
- SIR_RESEL_ABORTED,
- SCR_JUMP,
- PADDR_A (start),
- }/*-------------------------< RESEND_IDENT >---------------------*/,{
- /*
- * The target stays in MSG OUT phase after having acked
- * Identify [+ Tag [+ Extended message ]]. Targets shall
- * behave this way on parity error.
- * We must send it again all the messages.
- */
- SCR_SET (SCR_ATN), /* Shall be asserted 2 deskew delays before the */
- 0, /* 1rst ACK = 90 ns. Hope the chip isn't too fast */
- SCR_JUMP,
- PADDR_A (send_ident),
- }/*-------------------------< IDENT_BREAK >----------------------*/,{
- SCR_CLR (SCR_ATN),
- 0,
- SCR_JUMP,
- PADDR_A (select2),
- }/*-------------------------< IDENT_BREAK_ATN >------------------*/,{
- SCR_SET (SCR_ATN),
- 0,
- SCR_JUMP,
- PADDR_A (select2),
- }/*-------------------------< SDATA_IN >-------------------------*/,{
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct sym_dsb, sense),
- SCR_CALL,
- PADDR_A (datai_done),
- SCR_JUMP,
- PADDR_B (data_ovrun),
- }/*-------------------------< RESEL_BAD_LUN >--------------------*/,{
- /*
- * Message is an IDENTIFY, but lun is unknown.
- * Signal problem to C code for logging the event.
- * Send a M_ABORT to clear all pending tasks.
- */
- SCR_INT,
- SIR_RESEL_BAD_LUN,
- SCR_JUMP,
- PADDR_B (abort_resel),
- }/*-------------------------< BAD_I_T_L >------------------------*/,{
- /*
- * We donnot have a task for that I_T_L.
- * Signal problem to C code for logging the event.
- * Send a M_ABORT message.
- */
- SCR_INT,
- SIR_RESEL_BAD_I_T_L,
- SCR_JUMP,
- PADDR_B (abort_resel),
- }/*-------------------------< BAD_I_T_L_Q >----------------------*/,{
- /*
- * We donnot have a task that matches the tag.
- * Signal problem to C code for logging the event.
- * Send a M_ABORTTAG message.
- */
- SCR_INT,
- SIR_RESEL_BAD_I_T_L_Q,
- SCR_JUMP,
- PADDR_B (abort_resel),
- }/*-------------------------< BAD_STATUS >-----------------------*/,{
- /*
- * Anything different from INTERMEDIATE
- * CONDITION MET should be a bad SCSI status,
- * given that GOOD status has already been tested.
- * Call the C code.
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDR_B (startpos),
- SCR_INT ^ IFFALSE (DATA (S_COND_MET)),
- SIR_BAD_SCSI_STATUS,
- SCR_RETURN,
- 0,
- }/*-------------------------< PM_HANDLE >------------------------*/,{
- /*
- * Phase mismatch handling.
- *
- * Since we have to deal with 2 SCSI data pointers
- * (current and saved), we need at least 2 contexts.
- * Each context (pm0 and pm1) has a saved area, a
- * SAVE mini-script and a DATA phase mini-script.
- */
- /*
- * Get the PM handling flags.
- */
- SCR_FROM_REG (HF_REG),
- 0,
- /*
- * If no flags (1rst PM for example), avoid
- * all the below heavy flags testing.
- * This makes the normal case a bit faster.
- */
- SCR_JUMP ^ IFTRUE (MASK (0, (HF_IN_PM0 | HF_IN_PM1 | HF_DP_SAVED))),
- PADDR_B (pm_handle1),
- /*
- * If we received a SAVE DP, switch to the
- * other PM context since the savep may point
- * to the current PM context.
- */
- SCR_JUMPR ^ IFFALSE (MASK (HF_DP_SAVED, HF_DP_SAVED)),
- 8,
- SCR_REG_REG (sfbr, SCR_XOR, HF_ACT_PM),
- 0,
- /*
- * If we have been interrupt in a PM DATA mini-script,
- * we take the return address from the corresponding
- * saved area.
- * This ensure the return address always points to the
- * main DATA script for this transfer.
- */
- SCR_JUMP ^ IFTRUE (MASK (0, (HF_IN_PM0 | HF_IN_PM1))),
- PADDR_B (pm_handle1),
- SCR_JUMPR ^ IFFALSE (MASK (HF_IN_PM0, HF_IN_PM0)),
- 16,
- SCR_LOAD_REL (ia, 4),
- offsetof(struct sym_ccb, phys.pm0.ret),
- SCR_JUMP,
- PADDR_B (pm_save),
- SCR_LOAD_REL (ia, 4),
- offsetof(struct sym_ccb, phys.pm1.ret),
- SCR_JUMP,
- PADDR_B (pm_save),
- }/*-------------------------< PM_HANDLE1 >-----------------------*/,{
- /*
- * Normal case.
- * Update the return address so that it
- * will point after the interrupted MOVE.
- */
- SCR_REG_REG (ia, SCR_ADD, 8),
- 0,
- SCR_REG_REG (ia1, SCR_ADDC, 0),
- 0,
- }/*-------------------------< PM_SAVE >--------------------------*/,{
- /*
- * Clear all the flags that told us if we were
- * interrupted in a PM DATA mini-script and/or
- * we received a SAVE DP.
- */
- SCR_SFBR_REG (HF_REG, SCR_AND, (~(HF_IN_PM0|HF_IN_PM1|HF_DP_SAVED))),
- 0,
- /*
- * Choose the current PM context.
- */
- SCR_JUMP ^ IFTRUE (MASK (HF_ACT_PM, HF_ACT_PM)),
- PADDR_B (pm1_save),
- }/*-------------------------< PM0_SAVE >-------------------------*/,{
- SCR_STORE_REL (ia, 4),
- offsetof(struct sym_ccb, phys.pm0.ret),
- /*
- * If WSR bit is set, either UA and RBC may
- * have to be changed whether the device wants
- * to ignore this residue or not.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_CALL ^ IFTRUE (MASK (WSR, WSR)),
- PADDR_B (pm_wsr_handle),
- /*
- * Save the remaining byte count, the updated
- * address and the return address.
- */
- SCR_STORE_REL (rbc, 4),
- offsetof(struct sym_ccb, phys.pm0.sg.size),
- SCR_STORE_REL (ua, 4),
- offsetof(struct sym_ccb, phys.pm0.sg.addr),
- /*
- * Set the current pointer at the PM0 DATA mini-script.
- */
- SCR_LOAD_ABS (ia, 4),
- PADDR_B (pm0_data_addr),
- }/*-------------------------< PM_SAVE_END >----------------------*/,{
- SCR_STORE_REL (ia, 4),
- offsetof(struct sym_ccb, phys.head.lastp),
- SCR_JUMP,
- PADDR_A (dispatch),
- }/*-------------------------< PM1_SAVE >-------------------------*/,{
- SCR_STORE_REL (ia, 4),
- offsetof(struct sym_ccb, phys.pm1.ret),
- /*
- * If WSR bit is set, either UA and RBC may
- * have to be changed whether the device wants
- * to ignore this residue or not.
- */
- SCR_FROM_REG (scntl2),
- 0,
- SCR_CALL ^ IFTRUE (MASK (WSR, WSR)),
- PADDR_B (pm_wsr_handle),
- /*
- * Save the remaining byte count, the updated
- * address and the return address.
- */
- SCR_STORE_REL (rbc, 4),
- offsetof(struct sym_ccb, phys.pm1.sg.size),
- SCR_STORE_REL (ua, 4),
- offsetof(struct sym_ccb, phys.pm1.sg.addr),
- /*
- * Set the current pointer at the PM1 DATA mini-script.
- */
- SCR_LOAD_ABS (ia, 4),
- PADDR_B (pm1_data_addr),
- SCR_JUMP,
- PADDR_B (pm_save_end),
- }/*-------------------------< PM_WSR_HANDLE >--------------------*/,{
- /*
- * Phase mismatch handling from SCRIPT with WSR set.
- * Such a condition can occur if the chip wants to
- * execute a CHMOV(size > 1) when the WSR bit is
- * set and the target changes PHASE.
- *
- * We must move the residual byte to memory.
- *
- * UA contains bit 0..31 of the address to
- * move the residual byte.
- * Move it to the table indirect.
- */
- SCR_STORE_REL (ua, 4),
- offsetof (struct sym_ccb, phys.wresid.addr),
- /*
- * Increment UA (move address to next position).
- */
- SCR_REG_REG (ua, SCR_ADD, 1),
- 0,
- SCR_REG_REG (ua1, SCR_ADDC, 0),
- 0,
- SCR_REG_REG (ua2, SCR_ADDC, 0),
- 0,
- SCR_REG_REG (ua3, SCR_ADDC, 0),
- 0,
- /*
- * Compute SCRATCHA as:
- * - size to transfer = 1 byte.
- * - bit 24..31 = high address bit [32...39].
- */
- SCR_LOAD_ABS (scratcha, 4),
- PADDR_B (zero),
- SCR_REG_REG (scratcha, SCR_OR, 1),
- 0,
- SCR_FROM_REG (rbc3),
- 0,
- SCR_TO_REG (scratcha3),
- 0,
- /*
- * Move this value to the table indirect.
- */
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.wresid.size),
- /*
- * Wait for a valid phase.
- * While testing with bogus QUANTUM drives, the C1010
- * sometimes raised a spurious phase mismatch with
- * WSR and the CHMOV(1) triggered another PM.
- * Waiting explicitely for the PHASE seemed to avoid
- * the nested phase mismatch. Btw, this didn't happen
- * using my IBM drives.
- */
- SCR_JUMPR ^ IFFALSE (WHEN (SCR_DATA_IN)),
- 0,
- /*
- * Perform the move of the residual byte.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct sym_ccb, phys.wresid),
- /*
- * We can now handle the phase mismatch with UA fixed.
- * RBC[0..23]=0 is a special case that does not require
- * a PM context. The C code also checks against this.
- */
- SCR_FROM_REG (rbc),
- 0,
- SCR_RETURN ^ IFFALSE (DATA (0)),
- 0,
- SCR_FROM_REG (rbc1),
- 0,
- SCR_RETURN ^ IFFALSE (DATA (0)),
- 0,
- SCR_FROM_REG (rbc2),
- 0,
- SCR_RETURN ^ IFFALSE (DATA (0)),
- 0,
- /*
- * RBC[0..23]=0.
- * Not only we donnot need a PM context, but this would
- * lead to a bogus CHMOV(0). This condition means that
- * the residual was the last byte to move from this CHMOV.
- * So, we just have to move the current data script pointer
- * (i.e. TEMP) to the SCRIPTS address following the
- * interrupted CHMOV and jump to dispatcher.
- * IA contains the data pointer to save.
- */
- SCR_JUMP,
- PADDR_B (pm_save_end),
- }/*-------------------------< WSR_MA_HELPER >--------------------*/,{
- /*
- * Helper for the C code when WSR bit is set.
- * Perform the move of the residual byte.
- */
- SCR_CHMOV_TBL ^ SCR_DATA_IN,
- offsetof (struct sym_ccb, phys.wresid),
- SCR_JUMP,
- PADDR_A (dispatch),
- #ifdef SYM_OPT_HANDLE_DIR_UNKNOWN
- }/*-------------------------< DATA_IO >--------------------------*/,{
- /*
- * We jump here if the data direction was unknown at the
- * time we had to queue the command to the scripts processor.
- * Pointers had been set as follow in this situation:
- * savep --> DATA_IO
- * lastp --> start pointer when DATA_IN
- * wlastp --> start pointer when DATA_OUT
- * This script sets savep and lastp according to the
- * direction chosen by the target.
- */
- SCR_JUMP ^ IFTRUE (WHEN (SCR_DATA_OUT)),
- PADDR_B (data_io_out),
- }/*-------------------------< DATA_IO_IN >-----------------------*/,{
- /*
- * Direction is DATA IN.
- */
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- }/*-------------------------< DATA_IO_COM >----------------------*/,{
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.savep),
- /*
- * Jump to the SCRIPTS according to actual direction.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof (struct sym_ccb, phys.head.savep),
- SCR_RETURN,
- 0,
- }/*-------------------------< DATA_IO_OUT >----------------------*/,{
- /*
- * Direction is DATA OUT.
- */
- SCR_REG_REG (HF_REG, SCR_AND, (~HF_DATA_IN)),
- 0,
- SCR_LOAD_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.wlastp),
- SCR_STORE_REL (scratcha, 4),
- offsetof (struct sym_ccb, phys.head.lastp),
- SCR_JUMP,
- PADDR_B(data_io_com),
- #endif /* SYM_OPT_HANDLE_DIR_UNKNOWN */
- }/*-------------------------< ZERO >-----------------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------< SCRATCH >--------------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------< PM0_DATA_ADDR >--------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------< PM1_DATA_ADDR >--------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------< DONE_POS >-------------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------< STARTPOS >-------------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------< TARGTBL >--------------------------*/,{
- SCR_DATA_ZERO,
- }/*-------------------------<>-----------------------------------*/
- };
- static struct SYM_FWZ_SCR SYM_FWZ_SCR = {
- /*-------------------------< SNOOPTEST >------------------------*/{
- /*
- * Read the variable from memory.
- */
- SCR_LOAD_REL (scratcha, 4),
- offsetof(struct sym_hcb, scratch),
- /*
- * Write the variable to memory.
- */
- SCR_STORE_REL (temp, 4),
- offsetof(struct sym_hcb, scratch),
- /*
- * Read back the variable from memory.
- */
- SCR_LOAD_REL (temp, 4),
- offsetof(struct sym_hcb, scratch),
- }/*-------------------------< SNOOPEND >-------------------------*/,{
- /*
- * And stop.
- */
- SCR_INT,
- 99,
- #ifdef SYM_OPT_NO_BUS_MEMORY_MAPPING
- /*
- * We may use MEMORY MOVE instructions to load the on chip-RAM,
- * if it happens that mapping PCI memory is not possible.
- * But writing the RAM from the CPU is the preferred method,
- * since PCI 2.2 seems to disallow PCI self-mastering.
- */
- }/*-------------------------< START_RAM >------------------------*/,{
- /*
- * Load the script into on-chip RAM,
- * and jump to start point.
- */
- SCR_COPY (sizeof(struct SYM_FWA_SCR)),
- }/*-------------------------< SCRIPTA0_BA >----------------------*/,{
- 0,
- PADDR_A (start),
- SCR_JUMP,
- PADDR_A (init),
- }/*-------------------------< START_RAM64 >----------------------*/,{
- /*
- * Load the RAM and start for 64 bit PCI (895A,896).
- * Both scripts (script and scripth) are loaded into
- * the RAM which is 8K (4K for 825A/875/895).
- * We also need to load some 32-63 bit segments
- * address of the SCRIPTS processor.
- * LOAD/STORE ABSOLUTE always refers to on-chip RAM
- * in our implementation. The main memory is
- * accessed using LOAD/STORE DSA RELATIVE.
- */
- SCR_LOAD_REL (mmws, 4),
- offsetof (struct sym_hcb, scr_ram_seg),
- SCR_COPY (sizeof(struct SYM_FWA_SCR)),
- }/*-------------------------< SCRIPTA0_BA64 >--------------------*/,{
- 0,
- PADDR_A (start),
- SCR_COPY (sizeof(struct SYM_FWB_SCR)),
- }/*-------------------------< SCRIPTB0_BA64 >--------------------*/,{
- 0,
- PADDR_B (start64),
- SCR_LOAD_REL (mmrs, 4),
- offsetof (struct sym_hcb, scr_ram_seg),
- SCR_JUMP64,
- PADDR_B (start64),
- }/*-------------------------< RAM_SEG64 >------------------------*/,{
- 0,
- #endif /* SYM_OPT_NO_BUS_MEMORY_MAPPING */
- }/*-------------------------<>-----------------------------------*/
- };